package fun.codedesign.jdk.util.file;

import java.io.File;
import java.io.FilenameFilter;
import java.util.Arrays;
import java.util.regex.Pattern;

public class DirList3 {
    public static void main(final String[] args) {
        File path = new File(".");
        String[] list = null;
        if (args.length == 0) {
            list = path.list();
        } else {
            list = path.list(new FilenameFilter() {

                private Pattern pattern = Pattern.compile(args[0]);

                @Override
                public boolean accept(File dir, String name) {
                    return pattern.matcher(name).matches();
                }
            });
        }
        System.out.println(Arrays.toString(list));
    }
}
